2201121300 has 144 divisors (see below), whose sum is σ = 7360778880. Its totient is φ = 497418240.

The previous prime is 2201121269. The next prime is 2201121301. The reversal of 2201121300 is 31211022.

It is a Harshad number since it is a multiple of its sum of digits (12).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2201121301) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 181012 + ... + 192788.

It is an arithmetic number, because the mean of its divisors is an integer number (51116520).

Almost surely, 2^2201121300 is an apocalyptic number.

2201121300 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2201121300, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3680389440).

2201121300 is an abundant number, since it is smaller than the sum of its proper divisors (5159657580).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

2201121300 is a wasteful number, since it uses less digits than its factorization.

2201121300 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11890 (or 11883 counting only the distinct ones).

The product of its (nonzero) digits is 24, while the sum is 12.

The square root of 2201121300 is about 46916.1091737156. The cubic root of 2201121300 is about 1300.8123719263.

Adding to 2201121300 its reverse (31211022), we get a palindrome (2232332322).

The spelling of 2201121300 in words is "two billion, two hundred one million, one hundred twenty-one thousand, three hundred".